Your smartphone, tablet and other devices emit large quantities of blue light wavelengths. This tells your body "wake up!" when you should be getting ready to sleep. (2:50 min.)

It’s in our tap water, toothpaste and even in tea. Fluoride has helped reduce cavities in children for decades. Still, more than 70 years after Grand Rapids, Michigan, became the first city to fluoridate its drinking water, the practice remains controversial. Some worry that fluoridated drinking water can lead to health issues, but what is the scientific consensus? (3:14 min.)

Drones aren’t just cool little flying machines. They’re also extremely useful in many areas: scientific research, celebrity performances...they might even be able to help farmers grow crops!

I’m the Director of CanChild. I’m also Professor in the Department of Pediatrics and hold the Scotiabank Chair in Child Health Research at McMaster University. I supervise students from the undergraduate through to the postdoctoral level. As well, I work as a physiatrist at McMaster Children’s Hospital.

Here’s a conundrum: Identical twins originate from the same DNA ... so how can they turn out so different — even in traits that have a significant genetic component? (5:02 min.)

I created a company called Labfundr, so I am labelled a “founder”. When you start a small company, the title of founder (or CEO, for that matter) means you do just about every type of task! You wear many “hats”, as they say. In practice, this means doing research, planning, sales, marketing, sweeping the floors, and making lots and lots of coffee.

Your cells may be tiny, but they can do some pretty complex tasks to keep you alive. That’s because your cells, like the cells of every living organism, have specialized proteins constantly hard at work.